Typewriter ribbon vibrator



C. SPIRO.

TYPEWRHER RIBBON VIBRATOR.

APPLICATION FILED MAR. 6.1919.

Patented Jan. 3, 1922.-

Y MUN o d. P w R.\ v. 0N W M T m b Is A NM v m m NQ @W W] TNESS CHARLES. SPIRO, O33 NEW' YQRK, N. L, ASSIGNOR T GOURLAND TYEEWRITER CORPO- Y., A CORPORATIONOF NEW YORK.

"RATIQN, OE NEW YORK, N.

'rrrnwnrrnn. RIBBON visitat on.

Specification of Letters Patent.

Patented J an. 3, 1922.

Application filed March 6, 1919; Serial No. 280,948.

To Ml whom it may concern: f Be 1t known-that T, Crnrnnns SrIRo, cit zen of the United States, EBSICllIlg at New York, in the county of New York and State of New York, have mVented certain new and useful Improvements in Typewr ter Ribbon Vibrators, of which the following is a specification.

This invention relates to a typewriter; ribbon' vibrating mechanism, and particularly to a construction adapted to vibrate the ribferent colors.

nected to an actuating lever which is 'oscillated by a connecting member upon a uni versal bail having its point of conne'ctlon I with the actuating lever shiftable relative to the fulcrum thereof. w

A further object of the invention is to provide an improved construction of actuating lever andshiftable connecting link, particularly adapted for use in connection with a reciprocating typebar actuated universal bail. I I

Another object of the invention is to pre- [sent a novel construction of connection and mounting for the vibrator lever and connection therefrom to, the actuating lever by which the former may be vertically shifted with the platen without affecting the operation of the parts nor the vibration of the ribbonin different paths of travel. 7 Other and further'objeots. and advantages of the invention will be hereinafter defined and the .novel features thereof defined by the appended claims. In the drawing- Figure 1 is a central vertical section showing the invention applied to a typewriting mechanism 5' Figure 2 is a detailperspective of the ribbon'vibrating members, and Figure 3-is a detail section of the vibrator connection.

Like numerals refer to like parts-in the several figures of the drawing.

The numeralIlO designates the frame of a typewriter, which may be of any desired construction or configuration, and. has mounted at the rear thereof the shifting "and passing through thereto and carries flying beneath the portion ,22 and in a plate 11 and posts 12 depending therefrom guides 13 upon the frame. These posts are reciprocated by the usual shift key levers 14.- in the ordinary manner. The plate 11 carries the typewriter carriage 15, which may be of any preferred form, and is provided with the platen-16 adapted to be shifted vertically with the carriage for upper or lower case printing.

The frame is also provided with the usual sector 17 upon which the typebars 18 are pivoted, and these typebars are actuated by the ordinary lever connections for that purpose. The sector'also has mounted thereon the usual universal-bail or bar 19 disposed tobe operated in one direction by the shoulder 2O uponthe typebar.. V

The vibratorbracket 21 is secured to'the shifting plate 11 in any desired manner, and

has the horizontal portion 22 extending rearward therefrom. The end 23 of this portlon is extended downward at an angle the pivoting arm 24- parallel horizontal plane. 7

The vibrator lever 25 is pivoted at 26 to this arm and the forwardly extending member 27 thereof has pivotally mounted at its outer end 28 the ribbon arm or holder 29 which supports the ribbon 30 in the usual manner. The arm 24 is formed with a supporting flange or lug 31 extending beneath the member 27 so as to lift the lever and ribbon when the carriage and platen are vertically shifted for upper case work.

T he verti'cal arm 32 of the vibrator lever is provided with a lateral pin 33 which extends through a slotted vertical extension 34 atthe free end of the actuating'lever 35. This lever is disposed in a horizontal plane at'the rear of the bail 19 and is mounted by a pivot 36 upon a bracket 37 secured to the side'of the typewriter frame. The pivoted end of the actuating lever is formed with a vertical end wall 38 having a lateral pivoting flange 39 at its upper end through which the pivot 86 extends. This construction provides, an elongated support for the pivot of the actuating lever. which insures easy and accurate operation thereof when the vibrator lever is in either of its shifted positions.

For the purpose of varying the length of li-d travel or throw of the actuating lever and the consequent path of vibration of the ribbon the lever is provided with an elongated slot 40 extending longitudinally thereof and adapted to receive a pin or screwed carried by the inner end of the connecting link member 42. The opposite end of this link is pivotally mounted at 43 upon the universal bail 19 in any desired manner. The slot 40 is preferably formed with a segmental wall and if desired the opposite wall thereof may be formed with an open portion extending between the end tongues e5. This provides means by which the link may be shifted into a position where it will not I actuate the lever, for instance when it is desired to perform stencil cuttlng work.

Cir

lever it is desirable to pivot t a bracket 46 extending upwad from the end of the .typebar travel.

, The link is preferably disposed beneath the lever 35 and the head of the connecting screw ll retains the parts in proper shiftable position. In order to position the opposite end of the link in alignment with the be same upon universal bail and parallel thereto. This .permlts the link to operate in a horizontal plane parallel with the plane of the actuat in lever.v

The link may beshifted by any desired connections, for instance the rod l? pivoted thereto and extending to the bell-crank lever I if the connecting pin from the former were straight at'its contact ecges the slot in the.

latter would have to be wider than the diamter of said pin in order to transmit motion at all points in the different arcs of travel of said parts. This would result in a loose and undesirable connection which also renl ders impossible an accurate vibration of the 1'lbb0n, 8S] 36C1tlly for the upper or red color path, as theshlfting of the universal bail by which the ribbon is vibrated occurs near the It is therefore necessary that a constant close contact be malntained between the actuating and vibrator levers so that no lost motion shall occur, and to secure this essential function the pin 33 from the vibrator lever is provided with a curved or ball shaped contact face disposed to maintain constant contact with the vertical walls 53 of the slot in the extension 3a from the actuating lever. This construction greatly reduces the frictional contact between the pin and the slot walls while effecting a positive shifting for writing on either color path, and also prevents the partial shifting frequently due to loose conned tions by which both colors show at asinigle impression; The ball shown is a desirable form for securing these results, but'otner' arrangements of the contacting parts may be effected to secure a close contacting relation between the actuating and vibrator, levers in their several positions due to their arcs of travel or their shifted relation. This connection is particularly adapted for use when the actuating lever is mounted to oscillate in a different plane from the vibrator lever, which causes the arcs of travel to diverge, as thereis only a limited travel of the universal bail the motion of which must be fully transmitted to the ribbon especially during the period of its longest degree of vibration.

In the operation of the invention it will be seen that when the connecting link is shifted to the end of the slot inthe actuating lever nearest its pivot the greatest extent of movement will be imparted thereto and to the ribbon vibrator so as to print upon'the lower color path thereof. This arrangement of the parts is shown in Figure 2 of the drawing and when the link is 'shifted'to the opposit end of the slot the actuating lever is given its shortest. movement and the upper color path of the ribbon vibrated at the I printing point. With the link in an intermediate position or opposite the opening in the slot no motion is imparted to the actuat- -ing lever and consequently a the ribbon vibratorremains at rest as when the machine 1s used for. stencil cutting purposes. The construction and arrangement of the actuat ing lever disposed between the universal bail connection and the vibrator lever par t-lcularly adapts the invention for use with a typebar actuated reciprocating bail. and provides a simple, ei'licient and economically constructed appliance for vibrating a bichrome ribbon in varied paths. The long hearing at the pivotal end of the actuating lever prevents play or wabbling thereof and insure stabi ity necessary for an accurate movement of this lever in its relation with the connectedshiftable vibrator lever. The ribbon holder and vibrator are also mounted to be shifted with the platen for upper or lowercase printing andwithout afl'ectingits operative relation with "the actuating lever.

While the details-of the construction and mounting of the several aarts of the invention have been specifically shown and de scribed, still the invention is not confined thereto as defined by the following claims.

l/Vhat I claim is r I 1. In a ribbon vibrator, an actuating lever, a, vibrator lever pivoted independently thereof to oscillate in a plane at an angle to the actuating. lev r and connected thereto, a typebar actuated universal bail having a' igpart movable .in the plane of the actuating IIGVGQHDQI connecting means extending from saldiball to said actuating lever.

2. In a ribbon vibrator,an actuatin lever, a vertically dlsposed'vibrator lever mounted upona relatively fixed-part to oscillate in a :plane atanangle to the actuating leverand directly connected: thereto at a {free end- -i thereof, anniversal bail, and a connecting 10.

linkamounted thereon and adjustable longithe pivotthe'reof. v

.3." In a ribbon vibrator, a vibrator lever,

an actuating lever directly. connected there with, a universal-bail, a connecting link mounted thereon-and adjustable longitudinally of the actuating lever relative to the pivot thereof, a switch lever,- a' rod eXtending therefrom to said link, and means for operatingsaid switch lever. r

4. In a ribbon vibrator, a vibrator lever, a longitudinally slotted actuating lever directly connectedtherewith, a typebar actuated reciprocating universal bail, and a con necting member pivotally mounted thereon and adjustable in the slot of said actuating lever.

5. In a ribbon vibrator, a vibrator lever, an actuating lever pivoted at one end, means at the opposite end thereof for connection with said vibrator lever to permit relative vertical movement, a reciporcating universal bail, and a connecting member pivotally mounted thereon and adjustable upon the actuating lever relative to the pivot thereof.

6. In a ribbon vibrator, a vertically disposed vibrator lever, a horizontally disposed actuating lever connected thereto at one end, a reciprocating universal bail, and a connecting member pivoted thereon and adjustable upon the actuating lever relative to its pivot.

'7. In a ribbon vibrator, a vertically disposed vibrator lever, a horizontally disposed actuating leverhaving a vertical extension at one end coimectedthereto, a reciprocating bail, and a connecting member pivoted thereon and adjustable upon the actuating lever relative to its pivot.

8. In a ribbon vibrator, a vibrator lever provided with a lateral connecting pin, an actuating lever pivoted at one end and provided with a longitudinally extending segmental slot, a connecting member at one end of the actuating lever to engage said pin, a universal bail, and a link pivoted thereon and mounted to be adjustable in the slot of the actuating lever.

9. In a ribbon vibrator, an angular vibrator lever provided with a lateral connecting pin, an actuating lever pivoted at one end and provided with a longitudinally extending segmental slot, an angular slotted member at the opposite end of the actuating lever to engage said pin, a universal bail,

ment toward and'from the printing point on said platen, a vibrator lever for said holder mounted to shift with said carriage mechanism, an actuating lever having a slotted con tudlnally ofbthe actuating lever relative to nection with the vibrator lever to permit relative shifting thereof, a universal bail, and a connection therefrom shiftable toward and from the pivot of the actuating lever.

11. In a typewriter, a frame, a vertically shifting carriage mechanism provided with a platen, a ribbon holder arranged for movement relative to said platen, a vibrator lever for said holder, a bracket mounted to shift with said mechanism and having means to support said lever during the shifting action, a lateral projection from said vibrator lever, an actuatinglever pivoted at one end and having at its opposite end a slotted member to receive said projection, a universal bail, and a connection pivoted thereon and shiftable upon the actuating lever relative to the pivot thereof.

12. In a typewriter, a. frame, a vertically shifting carriage mechanism provided with a platen, a bracket mounted to shift with said mechanism and having a. forwardly extending pivoting arm, a ribbon holder, a vibrating lever therefor pivoted upon said arm, a member carried by said arm to contract with the under face of said lever, an actuating lever connected to said vibrating lever, a universal bail, and a connectio therefrom to said actuating lever.

13. In a ribbon vibrator, an actuating lever having a vertical wall at one end provided' with a pivoting flange and a vertical slotted extension atthe opposite end thereof, a pivoting bracket for one end of said lever, a vibrator lever connected to said slotted extension, a universal bail, and a connection therefrom to the actuating lever.

14. In a ribbon vibrator, an actuating lever pivoted at one end and provided with a longitudinally extending slot having a segmental wall, a universal bail, a connection therefrom shiftable along said wall, and a vibrator lever connected with the free end of said actuating lever.

15. In a ribbon vibrator, a universal bail, a horizontally disposed actuating lever having a case shift extension at one end, a shiftable connection between said bail and lever for varying the travel of the latter, and a vertically disposed vibrator lever pivoted independently of the actuating lever upon said extension therefrom.

16. In a ribbon vibrator, a case shifted pivoted vibrator lever, a non-case shifted and directly connected to case shift ilClitlilliii'lg lever mounted to oscillate in a: 'plane at an angle thereto, a unlversal ball,

a connectiontherefrom to operate said aetuating lever, and a universal joint connecpivoted vibrator lever, a non-case shifted,

actuating lever mounted to oscillate in a plane at an angle thereto, a universal bail,

a connection therefrom to operate said actuating lever, and a connection between the 'vibrator and actuating levers having a curved contact face disposed to maintain constant contact between the engaging surfaces of said levers during their vibrating and case shifting operations.

18. In a ribbon vibrator, a case shifted pivoted vibrator lever, a non-case shifted actuating lever mounted to oscillate in a plane at an'angle thereto,and a pin and slot connection between said levers constructed and arranged to maintainwconstant' {close contact. between the samenduring their vibrating and case shifting operations. 7

19. In a ribbon vibrator, a case-shifted pivoted vibrator lever, a non-case shifted actuating lever mounted to oscillate in aplane at an angle thereto,a slotted member, carried by one of said levers, and a ball member carried by the other leveriand disposed in said slot.v V j 20. In a ribbon vibrator, a vibrator lever disposed in a plane at an angle to the axis of. a platen, an actuating lever therefor disposed'to oscillate in a plane parallel to said axis, and a pin extended from one lever and provided with a spherical head closely seated in an aperture-in the other lezer.

ture,

' In testimony whereof. I affix my signa-' 

